SIMBAD references

2020A&A...641A.135S - Astronomy and Astrophysics, volume 641A, 135-135 (2020/9-1)

A wide angle view of the Sagittarius dwarf spheroidal galaxy. II. A CEMP-r/s star in the Sagittarius dwarf spheroidal galaxy.

SBORDONE L., HANSEN C.J., MONACO L., CRISTALLO S., BONIFACIO P., CAFFAU E., VILLANOVA S. and AMIGO P.

Abstract (from CDS):

We report on the discovery and chemical abundance analysis of the first CEMP-r/s star detected in the Sagittarius dwarf spheroidal galaxy (Sgr dSph) by means of UVES high-resolution spectra. The star, found in the outskirts of Sgr dSph, along the major axis of the main body, is a moderately metal-poor giant (Teff=4753K, logg=1.75, [Fe/H]=-1.55) with [C/Fe]=1.13, placing it in the so-called "high-carbon band", and strong s-process and r-process enrichment ([Ba/Fe]=1.4, [Eu/Fe]=1.01). Abundances of 29 elements from C to Dy were obtained. The chemical pattern appears to be best fitted by a scenario where an r-process pollution event pre-enriched the material out of which the star was born as secondary in a binary system whose primary evolved through the AGB phase, providing C- and s-process enrichment.

Abstract Copyright: © ESO 2020

Journal keyword(s): galaxies: abundances - galaxies: individual: Sgr dSph - Galaxy: abundances - stars: abundances - stars: chemically peculiar

VizieR on-line data: <Available at CDS (J/A+A/641/A135): alllines.dat allsynth.dat>

Simbad objects: 19

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